diff options
Diffstat (limited to 'libc/sysdeps/linux/common/msync.c')
| -rw-r--r-- | libc/sysdeps/linux/common/msync.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/libc/sysdeps/linux/common/msync.c b/libc/sysdeps/linux/common/msync.c index 7a46f0c32..2629bd4aa 100644 --- a/libc/sysdeps/linux/common/msync.c +++ b/libc/sysdeps/linux/common/msync.c @@ -9,16 +9,33 @@ #include <sys/syscall.h> #include <unistd.h> +#include <sys/mman.h> -#if defined __NR_msync && defined __ARCH_USE_MMU__ +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> +#else +#define SINGLE_THREAD_P 1 +#endif -#include <sys/mman.h> +#define __NR___syscall_msync __NR_msync +static __always_inline _syscall3(int, __syscall_msync, void *, addr, size_t, length, + int, flags) -#ifdef __LINUXTHREADS_OLD__ -extern __typeof(msync) weak_function msync; -strong_alias(msync,__libc_msync) +extern __typeof(msync) __libc_msync; +int __libc_msync(void * addr, size_t length, int flags) +{ +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype, result; #endif -_syscall3(int, msync, void *, addr, size_t, length, int, flags) + if (SINGLE_THREAD_P) + return __syscall_msync(addr, length, flags); +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + oldtype = LIBC_CANCEL_ASYNC (); + result = __syscall_msync(addr, length, flags); + LIBC_CANCEL_RESET (oldtype); + return result; #endif +} +weak_alias(__libc_msync,msync) |